Question

if perimeter of a semicircular protractor is 36 cm, find the diameter​

Answer 1

Answer:

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Step-by-step explanation:

Correct option is C)

Perimeter of semicircular protractor=36 cm

πr+2r=36

⇒(π+2)r=36

⇒(

7

22

+2)r=36

⇒

7

36

r=36

⇒r=

36

36×7

⇒r=7

Therefore, diameter =2r=2×7=14 cm